P1101
27 owner reports and 463 manufacturer filings across 78 model years from Buick, Cadillac, Chevrolet, GMC.
Where P1101 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2019 Chevrolet Malibu | Engine | 22 | 3 | |
| 2019 Chevrolet Equinox | Engine | 23 | — | |
| 2019 GMC Terrain | Engine | 23 | — | |
| 2018 Chevrolet Malibu | Engine | 13 | 5 | |
| 2020 Chevrolet Equinox | Engine | 16 | 1 | |
| 2020 Chevrolet Malibu | Engine | 14 | 3 | |
| 2018 Chevrolet Equinox | Engine | 16 | — | |
| 2016 Chevrolet Malibu | Engine | 13 | 3 | |
| 2020 GMC Terrain | Engine | 16 | — | |
| 2018 GMC Terrain | Engine | 15 | 1 | |
| 2017 Chevrolet Malibu | Engine | 12 | 3 | |
| 2016 Buick Encore | Equipment | 12 | — | |
| 2018 Buick Encore | Engine | 11 | — | |
| 2017 Buick Encore | Equipment | 11 | — | |
| 2017 Chevrolet Cruze | Engine | 8 | 2 | |
| 2021 Chevrolet Malibu | Engine | 7 | 3 | |
| 2019 Buick Encore | Engine | 9 | — | |
| 2016 Chevrolet Cruze | Engine | 8 | 1 | |
| 2019 Chevrolet Trax | Engine | 8 | — | |
| 2019 Chevrolet Cruze | Equipment | 7 | — | |
| 2018 Chevrolet Cruze | Engine | 7 | — | |
| 2021 Chevrolet Equinox | Engine | 7 | — | |
| 2019 Chevrolet Volt | Engine | 7 | — | |
| 2018 Chevrolet Volt | Engine | 7 | — | |
| 2017 Chevrolet Volt | Engine | 7 | — |
Showing the 25 model years where P1101 appears most; it is on file for 78 in total.
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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P1101 by make
The same record, one make at a time: the model years, bulletins and owner reports that name P1101 on that maker’s vehicles.
What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
On October 6, 2026, at 197,216 miles, an O’Reilly scan recorded stored P0304 (cylinder 4 misfire) and P1101 (intake airflow system performance)
Multiple diagnostic codes appear repeatedly, including P0299 (turbo underboost), P0101 (mass air flow performance), P1101 (intake airflow performance), and P0506 (idle control RPM too low)
Mechanics advised me that there is nothing wrong with my vehicle and drives smooth that the code P1101 maybe a recall because they have been seeing it much frequent on Chevy Cruze 2017,2018
When my racy begins to run out, my engine light has been coming on and I’ve been getting the same code P1101 I took my vehicle to GMC and they told me that the engine light came on because the tape came loose
463 manufacturer filings name P1101. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P1101.
- PIP6115 Service bulletin2026-05-21 · Unknown Or Other
- The document advise technicians after an engine repair involving removal of the camshaft actuators, the vehicle may set p1101 P0172 and or stalls when taken off idle. The technician is instructed to verify the intake and exhaust camshaft actuators are installed onto the correct camshafts.
- PIP6112 Service bulletin2026-05-04 · Unknown Or Other
- This Preliminary information communicates to the technician the diagnostic direction necessary to address MIL illumination with DTCs P0121, P0299, P1101 or P00C7.
- PIP5947C Service bulletin2024-12-05 · Engine
- This Preliminary information communicates to the dealers information related to potential failed engine camshaft cover causing excessive engine oil consumption, blue smoke from the exhaust system at low mileage. Can also possibly cause a misfire or idle surge and may or may not set history or current codes P0300 P050D P0521 P06DE P1101. It advises inspections for potential engine camshaft cover re
- 20-NA-047 Service bulletin2023-01-13 · Engine And Engine Cooling
- This service bulletin provides a service procedure to correct customer concerns of Front or Rear Crankshaft Oil Leak, MIL Illuminated with DTC P1101 Set.
- 22-NA-224 Service bulletin2022-11-04 · Engine And Engine Cooling
- This service bulletin provides a repair procedure to correct a customer concern of Reduced Engine Power, Malfunction Indicator Lamp (MIL) Illuminated - DTCs P0101, P0172, P0299, P0506, and/or P1101 Set.
- PIP5651F Service bulletin2021-08-19 · Structure
- This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
What P1101 means
Source: SAE J2012 / OBD-IIP1101 is a manufacturer-specific code: the second character is a 1, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P1101
Source: NHTSA files and the OBD-II standardWhy does this page not define P1101?
Because it cannot be defined honestly. The second character of a trouble code says who owns its meaning, and a 1 or a 3 hands that to the manufacturer. Sites that print one definition for a manufacturer-specific code are showing you one automaker's meaning and hoping it is yours.
Can I keep driving with P1101 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.